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All Journal Jurnal Universal Technic Jurnal Teknik Mesin, Industri, Elektro dan Informatika
Siska Wulandari
Universitas Sriwijaya
Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Electrical & Electronics Engineering Industrial & Manufacturing Engineering Transportation

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Studi Morfotektonik Daerah Ereunpalay, Kabupaten Tasikmalaya, Jawa Barat Siska Wulandari; Edy Sutriyono
Jurnal Universal Technic Vol. 2 No. 2 (2023): Oktober : Jurnal Universal Technic
Publisher : Fakultas Teknik Universitas Maritim AMNI Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58192/unitech.v2i2.1355

Abstract

Morphotectonics is a major factor in controlling the development of landforms and has an influence on river systems in the Ereunpalay area and its surroundings. This study uses a quantitative method, starting with a broad perspective and then moving on to a more focused and targeted approach. This tectonic geomorphological analysis uses several morphometric parameters, such as: Drainage Density (Dd), Bifurcation Ratio (Rb), Valley Floor Width to Valley Height Ratio (Vf), Mountain Front Sinousity (Smf), Hypsometric Curve and Hypsometric Integral (HI), and the Tectonic Activity Index (IAT). From the results of IAT calculations, it is found that the Ereunpalay area and its surroundings are in class one to three tectonic activities or commonly called moderate to very high class. The flow pattern of the river that dominates the study area is a parallel flow pattern which is controlled by the geological structure. Based on the results of the morphotectonic analysis, it was found that the Ereunpalay area and its surroundings have a morphological shape that is influenced by tectonic activity in the form of faults and folds.
PENGARUH VARIASI TEKANAN PADA MODIFIKASI BRIKET BATUBARA TERHADAP WAKTU SULUT Devi Komalasari; Siska Wulandari
Jurnal Teknik Mesin, Industri, Elektro dan Informatika Vol. 1 No. 4 (2022): Desember : JURNAL TEKNIK MESIN, INDUSTRI, ELEKTRO DAN INFORMATIKA
Publisher : Lembaga Pengembangan Kinerja Dosen

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (957.665 KB) | DOI: 10.55606/jtmei.v1i4.675

Abstract

Briquettes are alternative energy that can be used as substitutes of petroleum and gas. Coal briquettes generally have a slowignition time. Therefore, this study modifies coal briquettes by adding a blazingstimulant of palm frond fiber and potassium chlorate. The objectives to be achieved in this study wereto find out the effect of pressure variations modificationsof coal briquettes to the ignition time. In this study, the briquetting process was done by varying pressure of 200 Psi, 300 Psi, 400 Psi, 500 psi and 600 Psi. Coal briquette powder particle size used in this study was 80-100 mesh while the particle size of oil palm frond fibers used were 40-50 mesh. The results showed that the fastest ignition time obtained at a pressure of 200 Psi with ignition time 132 seconds. In conclusion, the pressure variations on coal briquettes modifications infunced ignition time.
Co-Authors Devi Komalasari Edy Sutriyono